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Bairdoppilata labiata (Mueller, 1908) Brandão, 2008
Nomenclature
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Family: BairdiidaeGenus: Bairdoppilata
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Synonyms: 3
SUMMARY
LV and RV subtriangular, smoothly rounded, equilateral in female, fairly inaequilateral in male, not caudate in lateral view. Males tend to be not as long, and not as high as females. Valve surface of adults smooth. Valves of adults and juveniles covered by many conspicuous sensilla of variable length, from very short to very long; long sensilla barbed. Normal pore canals simple, with narrow rims or without rim. Anterior fringes and posterior marginal denticles well developed. Marginal pore canals long and straight, not very numerous. Calcified inner lamella medium-sized. Hinge anterior and posterior elements with or without very faint denticulation, medial bar finely striate. Carapace subhexagonal, very inflated in dorsal view, with rounded contour, maximum width at mid-length. Eight adductor muscle scars present.
Antennula with several very long setae. Antenna with elongated podomere IV and V; exopodite with 1 very long and 2 short setae; podomere VI with 1 medium-sized anterodistal claw (its length about ¾ that of posterodistal claw), 1 long posterodistal claw, 2 small setae, and 1 medium-sized, fused seta in males; females present a more robust fused seta (claw-like). Masticatory process of Mandibula with several setae, and 1 simple, plus 5 trifurcate, plus 1 bifurcate teeth; exopodite with 1 very long and 2 long setae; podomere IV palp with 1 robust, feathered, distal claw. Vibratory plate of maxillula with 6 subequal strahlen and 25 feathered setae; endites with modified, broad, feathered, distal claws, and also simple setae and claws. Vibratory plate of Fifth limb with 4 proximally segregated strahlen, and 13 feathered setae. Furca with 7 setae; seta 1 (more distal one) thick, seta 2 the longest and distally feathered; seta 4 also long, other setae short, but not vestigial. Brush-shaped organ assymetrical. Genital lobe oval, with very long and tightly coiled internal tube and an external elongated process. Male copulatory limb with subrectangular basal element, followed by a medial subhemispherical element and terminated by an elongated, irregularly shaped distal element, the last terminates in a finger-like process; copulatory tube very elongate and strongly sclerotized; an elongated, flattened process arises from the distal part of the medial element.